Fig. 2From: Provenance differentiation and earth surface process of the Mu Us sandy land constrained by detrital zircon U–Pb datingZircon U–Pb age spectra for sediments on the lithological map of the Mu Us sandy land (modified from the geological map of China, 1:2,500,000). The Cretaceous samples are marked with green dots and green lines. The red and black curve represent the SW MU part and the NE MU, respectively. The red dashed line represents two parts of the MU based on the zircon U–Pb agesBack to article page